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Method for preparing wide temperature range high damping acrylic emulsion material

An acrylic emulsion and high damping technology, which is applied in the field of inorganic-organic composites, can solve the problems of complex damping material preparation process and insignificant modification results, and achieve good stability, simple synthesis process, and enhanced material damping performance.

Inactive Publication Date: 2008-08-27
UNIV OF SCI & TECH BEIJING
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  • Abstract
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the preparation process of the inorganic-organic composite interpenetrating network polymer damping material is complicated and the modification result is not significant

Method used

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  • Method for preparing wide temperature range high damping acrylic emulsion material
  • Method for preparing wide temperature range high damping acrylic emulsion material

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Experimental program
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Embodiment Construction

[0019] Experimental method 1: boron nitride composite acrylic emulsion

[0020] 1) Mix 60 grams of water, 19.2 grams of MMA, 12.8 grams of St, 0.8 grams of hexagonal boron nitride, 0.4 grams of emulsifier, 0.2 grams of cross-linking agent, and 0.2 grams of buffer. After ultrasonic dispersion for 30 minutes, put it into a single-port circle Stir in a bottom flask, pre-emulsify at room temperature at high speed for 1 hour to obtain a pre-emulsion. Under the condition of a water bath of 60°C, add 1 / 4 of the pre-emulsion liquid to a four-necked round bottom flask connected with a condenser, a dropping device, and a stirring device, and when the temperature is raised to 75°C with stirring, add 1 / 4 of the initiator and continue Raise the temperature to 78-80°C, and add the remaining pre-emulsion and initiator dropwise at a constant speed for 1.5-2 hours after the reaction system turns blue. After the dropwise addition, keep the temperature at 79-80° C. for 2 hours, and filter with ...

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Abstract

The invention relates to a preparation method of acrylic emulsion function material which is composited from inorganic and organic, with wide temperature range and high damping property, belonging to the technical field of organic polymer material. The invention is characterized in that the invention uses acrylate as polymerization monomer, uses organic silicon as organic composite material, and uses nanometer boron nitride and mica as inorganic composite materials, without changing the synthesis of emulsion to prepare a serial of polymer material whose damping temperature is higher than 135DEG C and damping factor is higher than 0.30, wherein the damping factor of the best material is higher than 0.5 when in the damping temperature higher than 135DEG C. The polymerization method is characterized in that the invention can prepare interpenetrating network polymer damping material in short reaction via simple synthesis method.

Description

Technical field: [0001] The invention belongs to the field of organic polymer materials, in particular to a preparation method of an inorganic-organic composite acrylic emulsion functional material with wide temperature range and high damping performance. Background technique: [0002] As a common damping material, interpenetrating network polymer emulsion has the characteristics of high damping performance and wide damping temperature range, and can be used for vibration and noise reduction. This new type of polymer damping material can be widely used as a damping functional material in the fields of life and production, transportation, aerospace and the like. [0003] Acrylate interpenetrating network polymer emulsion is a high-performance damping material. Due to the glass transition temperature T of acrylates g The adjustable range is very wide, so it is suitable for designing and preparing damping materials in a wide temperature range to meet the needs of damping resp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/10C08F212/08C08F2/22C08F2/44C08K3/38C08K3/34C08K5/54
Inventor 范慧俐曾晓翘
Owner UNIV OF SCI & TECH BEIJING
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